... -load burning test Low price,high reliability 48V ac dc power supply Installed with minimum wave HS-500W-48V 48V ac ... 1minInsulation impedance100M Ohms/500VDCCertificateCE ,ROHSPacking24pcsNote:1.The testing condition for the parameter above is :230VAC input, rated load,25 ... Feature:1,Low price and high reliability2,AC input power suitable for the world3,High efficiency and low operation temperature4, ...